用激电测深法探测白钨矿

来源期刊：中南大学学报(自然科学版)2002年第6期

论文作者：陈绍裘 梅小明 肖志强

文章页码：559 - 562

关键词：激发极化法;视电阻率;视幅频率;白钨矿

Key words：resistivity sounding method; pseudo-resistivity; apparent frequency; scheelite

摘    要：利用激发极化法测深中的视电阻率ρ_s和视幅频率F_s,确定灰岩和花岗岩的接触带部位并探测其中白钨矿的赋存状况.实践结果表明,利用地表风化层、灰岩、接触带充填物和花岗岩等与ρ_s曲线类型变化有很好的对应关系,从而通过电测深中ρs曲线可以了解测区内地下风化层、灰岩、接触带充填物和花岗岩的电性结构;利用ρ_s等值线断面图中的ρ_s等值线的分布规律可判断剖面内灰岩、接触带及花岗岩的存在部位及产状;根据F_s等值线断面图中F_s等值线的梯度变化和F_s等值线的形态可圈定白钨矿体的赋存空间.

Abstract: To detect scheelite belonging to rare metal with resistivity sounding method, pseudo-resistivity parameter ρ_s ,apparent frequency F_s , ρ_s abnormity and F_s abnormity in resistivity sounding method are used to confirm the place of contacting belt between limestone and granite and to detect the assignment situation of scheelite in the belt. The results show that the conducting structure of underground mantlerock, limestone and filling in contacting belt and granite can be known using the distribution and variety of ρ_s curve type from resistivity sounding, the existing place and occurrence of limestone, contacting belt and granite in the profile with the distributed rule of ρ_s is oline in ρ_s value contour profile can be judged, and the assignment space of scheelite with the change and the shape of f_s isoline infsvalue can be determined.